-6- 
Cooper, J. E., 0. F. Jackson, and J. C. Harshbarger. Surgical 
removal and diagnosis of a neurileiranal sarcoma in a tortoise 
(Testudo hermanni ). (in preparation). 
SELECTED ACTIVITIES IN 1981 
A. Research activities ; 
1. Studied, diagnosed and described for the files approxi¬ 
mately 200 cases of diseases in cold-blooded vertebrates 
and invertebrates. 
2. Collaborated with John J. Black and Robert F. Zeigel 
(Roswell Park Memorial Institute, 666 Elm Street, 
Buffalo, New York, 14263) on the study of liver tumors 
and tumors in other organs of a feral population of 
sauger, Stizostedion canadense , and walleye, Stizostedlon 
vitreum vltreum , inhabiting Torch Lake (located in Houghton 
County, Michigan) which is heavily polluted by copper 
mining wastes. 
3. Collaborated with Francis L. Rose (Department of Biolog¬ 
ical Sciences, Texas Tech University, Box 4149, Lubbock, 
Texas, 79409) and Robert S. Anderson (Donald S. Walker 
Laboratory, Sloan-Kettaring Institute for Cancer Research, 
145 Boston Post Road, Rye, New York, 10580) on the study 
of the possible carcinogenicity of environmental perylene 
on a feral population of neotenic tiger salamander, 
Ambystoma tigrinum , inhabiting a sewage lagoon located on 
Reese Air Force Base, Hurlwood, Lubbock County, Texas. 
4. Collaborated with Peter H. Wolf (Scientific Section, 
New South Wales State Fisheries, P. 0. Box N-189, 
Grosvenor Street, Sydney 2000, Australia) and Sing C. 
Chang (the Registry’s Microbiologist/Electron Mi- 
croscopist) on the fine structure of papillary epitheli¬ 
omas of the mantle in the Sydney rock oyster, Crassostrea 
commercialis. 
B. Other activities ; 
1. Member of the Organizing Committee of A Symposium on the 
Use of Small Fish Species in Carcinogenicity Testing. 
2. Member of the World Committee of the International Asso¬ 
ciation for Comparative Research on Leukemia and Related 
Diseases. 
Member of the Interagency Collaborative Group on Environ¬ 
mental Carcinogenesis. 
3. 
